In economy, regardless if it's CX or QF, both will not be fun. As suggested, I'd pick flights based on timing, schedule and your ability to sleep in a sardine can. If both of you are tall, you may have a case for an exit row seat, but don't hinge any hope on it. By all means, ask, but don't take it for granted.
In the old days, I'd pick CX based on its better service, but it's since gone downhill, so there's little difference.
Now (and I may be wrong on this), CX economy doesn't have on-demand entertainment systems, but QF does (on most 744s)?
In the old days, I'd pick CX based on its better service, but it's since gone downhill, so there's little difference.
Now (and I may be wrong on this), CX economy doesn't have on-demand entertainment systems, but QF does (on most 744s)?